| Patents for F24F 3 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems (19,462) |
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| 12/11/1991 | EP0460969A2 Cooling apparatus and method |
| 12/10/1991 | US5070704 Heating and cooling systems |
| 12/10/1991 | US5070703 Hybrid air conditioning system integration |
| 12/10/1991 | CA1292873C Air conditioning system |
| 12/09/1991 | CA2084753A1 Air conditioning system and method |
| 12/09/1991 | CA2022822A1 Device for mixing of fluid streams |
| 12/05/1991 | DE4017847A1 Suspended acoustic ceiling incorporating lighting and ventilation - includes ventilation ducts, heat exchangers and fans for forced air circulation |
| 12/03/1991 | US5069272 Air to air recouperator |
| 12/03/1991 | US5069113 Stacked and cross-connected recirculating fans in a semiconductor manufacturing cleanroom |
| 11/28/1991 | DE4115848A1 Combination supply and return air device - comprises pair of turbines working in independent channels surmounted by ventilators |
| 11/27/1991 | CN2089591U Hot tube air-conditioner |
| 11/21/1991 | DE4015506A1 High quality air prodn. using multiple filter - having mechanical, noble metal coated and varying pH filter elements, pref. with monitor and warning system |
| 11/20/1991 | CN2089140U Domestic atomizing water evaporating air-conditioner |
| 11/20/1991 | CN2089139U Low dew point air drier |
| 11/19/1991 | US5065668 Air circulation system |
| 11/19/1991 | US5065588 Air-conditioner system |
| 11/19/1991 | US5065586 Air conditioner with dehumidifying mode |
| 11/19/1991 | US5065585 System for cooling the interior of a building |
| 11/14/1991 | WO1991016971A1 Gas adsorbent element |
| 11/14/1991 | DE4015026A1 Vehicular ventilation system with variable cross=section filter - pivoted about axis in fresh air inlet by vacuum actuator controlled by pollution detectors |
| 11/13/1991 | EP0456420A1 A safety cabinet |
| 11/13/1991 | CN2088663U 空气冷却加湿器 Air cooling humidifier |
| 11/13/1991 | CN1014757B Arrangement for transporting air |
| 11/12/1991 | US5063835 Processing booth with variable ventilation |
| 11/12/1991 | US5063752 Air conditioning apparatus |
| 11/06/1991 | CN1014622B Cleanroom structure |
| 11/05/1991 | US5062280 Air conditioning apparatus |
| 10/31/1991 | WO1991016584A1 Efficient dehumidification system |
| 10/31/1991 | WO1991016500A1 Method and apparatus for dispelling fog |
| 10/30/1991 | EP0454181A2 Air treatment module for the realisation of an installation for ventilating and air conditioning a plurality of rooms |
| 10/29/1991 | US5061296 Air purification system |
| 10/29/1991 | US5060717 Air conditioner |
| 10/26/1991 | WO1991016580A1 Air supply device |
| 10/26/1991 | CA2081211A1 Air supply device |
| 10/23/1991 | EP0453271A2 Air conditioning apparatus |
| 10/22/1991 | US5058491 Building and method for manufacture of integrated circuits |
| 10/22/1991 | US5058394 Hybrid air conditioning system subsystem integration |
| 10/22/1991 | US5058388 Method and means of air conditioning |
| 10/22/1991 | CA1291195C Air furnace system |
| 10/17/1991 | WO1991015718A1 Process, installation and device for enriching ventilation or air-conditioning air with aromatic substances |
| 10/17/1991 | WO1991015311A1 Ventilation apparatus |
| 10/16/1991 | EP0451682A1 Apparatus for promoting the generation of organic compounds from trees |
| 10/16/1991 | CN2086875U Multipurpose air purifier |
| 10/16/1991 | CN2086874U 室内空气净化器 Indoor air purifiers |
| 10/16/1991 | CN1055278A Apparatus for promoting generation of exhaled organic compounds of trees |
| 10/15/1991 | US5056588 Evaporative cooling enhanced cold storage system |
| 10/15/1991 | US5056547 Relative humidity generation technique |
| 10/09/1991 | EP0450888A1 Rotary gas treating apparatus |
| 10/09/1991 | EP0450142A2 Clean air room for a semiconductor factory |
| 10/08/1991 | US5055115 Air cleaner including an electrostatic precipitator |
| 10/08/1991 | CA1290424C Supply airflow control for dual-duct system |
| 10/02/1991 | EP0449205A1 Automotive air-conditioner with variable-length damper |
| 10/02/1991 | DE4033926A1 Discharging volatile substance into air - involves fan to blow vapour away from wick immersed in liq. substance |
| 10/02/1991 | CN2085927U Improvement and treatment device for indoor air |
| 10/01/1991 | US5053065 Low-profile blower and filter apparatus for supplying clean air |
| 10/01/1991 | US5053064 Air conditioning apparatus for a clean room |
| 10/01/1991 | US5052188 Desiccant materials for use in gas fired cooling and dehumidification equipment |
| 10/01/1991 | CA1289926C Vav valve with pwm hot water coil |
| 10/01/1991 | CA1289866C Heat-exchanging member of a dehumidifier |
| 09/27/1991 | WO1991014903A1 Filtering and pressure stabilising device for a variable flow-rate ventilating installation |
| 09/25/1991 | EP0448345A1 Air conditioning system |
| 09/25/1991 | EP0355106B1 A rotatable heat exchanger |
| 09/24/1991 | US5050391 Method and apparatus for gas cooling |
| 09/24/1991 | US5050390 Method of and means for controlling the condition of air in an enclosure |
| 09/24/1991 | CA1289405C Clean air facility |
| 09/19/1991 | DE4108258A1 Room ventilating and air conditioning - divides each room into zones with repeated air supply and extraction |
| 09/18/1991 | EP0447314A1 Process and device for dynamic separation of two areas |
| 09/18/1991 | CN2085044U Spraying axial flow fan |
| 09/17/1991 | US5048200 Process and apparatus for dehumidifying wet air |
| 09/17/1991 | CA1289224C Control system for air cleaner |
| 09/11/1991 | EP0445175A1 A method and apparatus for drying air. |
| 09/11/1991 | EP0314762A4 Air conditioning apparatus |
| 09/07/1991 | WO1991013803A1 Method and means to prevent condensation in monocoque structures |
| 09/04/1991 | EP0444079A1 Clean air cabinets |
| 09/03/1991 | US5044172 Air conditioning apparatus |
| 08/28/1991 | CN1054130A Application system for producing humidity difference and temp. difference by wet gas enthalpy |
| 08/27/1991 | US5043840 Apparatus and method for selective environmental conditioning of substantially enclosed areas |
| 08/27/1991 | US5042997 Air control system providing healthful enclosed environment |
| 08/27/1991 | US5042367 Revolving air lock |
| 08/27/1991 | US5042266 Refrigerating and humidity-regulating system for use in a container |
| 08/22/1991 | WO1991012467A1 A heating and ventilation system |
| 08/21/1991 | EP0442228A1 Deodorizing antibacterial composition |
| 08/21/1991 | CN1053951A Air-conditioning technique and apparatus thereof |
| 08/21/1991 | CN1013617B Air conditioning means and method |
| 08/20/1991 | US5040375 Method and device for conditioning of a gas |
| 08/13/1991 | US5038850 Cooling and heat accumulating type electric cooling and heating system and a method for implementing the same |
| 08/13/1991 | US5038750 Air heating apparatus |
| 08/13/1991 | CA1287551C Draining device and the use thereof |
| 08/08/1991 | WO1991011667A1 Variable air volume ventilating system and method of operating same |
| 08/08/1991 | WO1991011246A1 Air purifier |
| 08/08/1991 | DE4013554A1 Room cooling circuit switch - works in hot season with condensers in exhaust or open air and common filter |
| 08/07/1991 | EP0439596A1 Bactericidal and fungicidal material for use in the manufacture of air-conditioning ducts. |
| 08/07/1991 | EP0281631B1 Installation for indirect evaporative cooling of air in an object |
| 08/07/1991 | CN2082374U Air purifying equipment |
| 08/07/1991 | CN2082373U Cold wind fans |
| 08/06/1991 | US5036906 Independent unit for heat exchange between a primary fluid and a secondary fluid, particularly air for ventilation and air conditioning of a room |
| 08/01/1991 | WO1991011271A1 Device and method for ventilation |
| 08/01/1991 | DE4013518C1 Air cleaning plant - includes fan at inlet of supply duct from which contaminated air passes through ring nozzle in duct |
| 08/01/1991 | CA2050474A1 Device and method for ventilation |
| 07/31/1991 | EP0263166A4 Air conditioning apparatus |